Pros
You will get thrown into important work right away and learn a lot. Pace is fast and priorities are constantly shifting, so the content isn't dull. Camaraderie is good--everyone is out there doing their best. Editors are paid overtime and can work fully remote.
Cons
Quality department is chronically understaffed so you cannot be promoted out of line work. Management will not be straightforward about this. You will be overworked and expected to pick up the slack of those who are slower than you with no extra compensation or recognition. You are simply never given enough time to do your job excellently. Focus is put on speed, which can be demoralizing. This job is better suited for someone who wants to know exactly what they will be doing each day with little variety. You should also not be too ambitious--if you are good at the line work you will never be given a seat at the table to make strategic decisions.